318 build with dyno session

Let me start by saying, I am definitely NOT a head porter, but the dilemma I'm pondering now, is that the speedmaster heads as cast, have the throat percentage to big for the 2.02 valve size for my liking, especially on a 322 cube engine. Theres not really a quick and easy way to fix that, so I'm gonna need to decide if I can live with that or come up with a alternative plan.